Hospital bed convertible to chair



Oct. 27, 1953 Filed Aug. 3, 1950 C. M. LARRICK HOSPITAL BED CONVERTIBLE TO CHAIR 3 Sheets-Sheet 1 CLZZLQWPZ'CZZ v I INVENTOR.

BY 1 I ATTORNEYS.

Oct. 27, 1953 c. M. LARRICK HOSPITAL BED CONVERTIBLE TO CHAIR 3 Sheets-Sheet 2 Filed Aug. 5, 1950 ajmliarmzjck INVENTOH ATTORNEYS.

Oct. 27, 1953 c. M. LARRICK HOSPITAL BED CONVERTIBLE TO CHAIR (5 Sheets-Sheet 3 Filed Aug. 3, 1950 ATTORNEYS.

Patented Oct. 27, 1953 omrso sures PATENiTtti.;OF. 'IC,E.* HOSPHITAL'BED CONVERTIBLE To cHAIR e caries MtLarrick, mamas, Ohio M A' t g uonhugl s s, 1950, serial-stinger) Clai ms. (01. 155-45) if This invention relates to bed" construction; and primarily to an improved hospital bed. An important object of the invention is to provide a hospital bed embodying a stationary bed frame and a pivoted bedframe mounted thereon, means bein provided fcr'moving'the pivoted bed frame to a vertical position sothat a person may get into the bed by standing on the foot railing of the bed and tilting the pivoted frame rearwardly to either a horizontal or angular position with respect to the stationary frame, for the'con venience of theperson or patient.

Still another object of the invention is topmvide a hospital bed of thischaracter wherein the pivoted frame section includes a "slidable slat section embodying pivoted frame sections which may be moved to'providea chair, so that ap'atient occupying the bed maybe elevated and moved to a sitting position without being removed'from the bed.

With the foregoing andotherobjeots inview which will appear as theldescription proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawings:

Figure 1 is a perspective view illustrating a bed constructed in accordance with the invention, portions of the bed frame being broken away illustrating the operating mechanism of thepivoted frame.

Fig. 2 is a perspective view illustrating the head section 5; so that thebed'may be-easily 1 rolled fromplacetoplace.

Brace rods F2" are connected with the hadfi and'downwardl-y extendedportions 9', while the transverse brace rods "(3 connect the upwardly extendedportions if of the siderails'6 holding the side rails inspaced relation with respeotto"each pivoted bed frame section as moved to a vertical position and the slat section mounted thereon, moved to one end of the bed.

Fig. 3 is an enlarged sectional view taken on line 3-3 of Fig. 4 frame operating mechanism.

Fig. 4 is a sectional view taken on line 4-4 of Fig. 3.

Fig. 5 is a vertical sectional view taken on line El-5 of Fig. 2.

Fig. 6 is a fragmental elevational view illustrating the pivotally connected sections of the slat frame.

Fig. 7 is a view illustrating a stop arm forming a part of the slat frame for of one end of the slat frame with respect to the adjacent section.

Referring to the drawings in detail, the bed comprises a stationary frame which includes the head 5 and side rails 6, the side rails 6 having upwardly extended portions I that extend forwardly at 3 and downwardly at 9, providing chair arms the downwardly extended portions 9 constituting legs that are supplied with casters l0. Casters I l are alsoextended into the ends of the which is slidably provide a chair at and illustrating the pivoted restricting movement other. C

The brace rod I4 connects the verticalbars'br legs of thehead section 5 holdin themspaced apart. Extending inwardly from the head section 5 and disposed horizontally, is the supporting bar r5 that provides a restforone end of "the pivoted bed frame l6 of "the bed, the pivotedbed framelS being rectangular information and of the desired length to provide a" support for the mattress in the formationof the bed. Secured to the bed frame It, at points inter mediate the ends of theside'members"thereof, are the plates I1 that have theirbuter edges curved in the arcs of circles and p'rovide'd with teeth that mesh with thepinions l8 that form a part of the operatinggearing. "'The'sepl-ates ll support the shafts I 9 that extend laterally there from, the shaftspassi'ng throughope'nings ihthe upwardly "extended portions lof the side fails, whereby'thebed frame l6 maybe swungrrtin a vertical to a horizontal position, or to desired angular position between the lirnitisof its vertical and horizontalpositionaso that a patient lying thereon may be'moved 'tdvaribus positions for comfort. The pinions [8 are mounted on the horizontal shaft 20 that has its ends mounted in bearing openings formed in the plates fl that extend rearwardly from the upwardly extended portidii's l of the side rails 6. The shaft 26 also extends through openings in the U-shaped bearing members 22 located at opposite sides of the frame, the shaft providing a support for the bevel pinions 23 that are secured thereto, the-bevel pinions 23 being mounted between the arms of the U-shaped bearings 22. Extending through the bearings 22 are shafts 24 on the upper ends of which'bevel pinions 25 are secured, the bevel pinions 25 meshing with the pinions 23 to transmit movement thereto. Secured on the shafts 24 are gears 26 that are in meshwith the worm gears 21 mounted on the shafts 28, which shafts 23 are supplied with wheels 29 that are rotated by the attendant in transmitting movement to the various gears and pinions for raising and lowering the pivoted bed frame IS. The side rails of the pivoted bed frame l6 are formed with slots extended longitudinally thereof, the slots being formed in the inner edges ofthe side rails of the bed frame IS.

tion as shown by Fig. 2 of the drawings to vide a chair, when the bed frame l6 has been swung upwardlyto its vertical r'iositio'n. Th sections 3| and 32 are connected by the hinges 34, while the sections 32 and 33 are connected by the hinges 35, the sections 32 being provided with stop arms 36 that are curved forwardly to engage the lower section 33 and hold the lower section 33 in a vertical position with respect to the section 32 when the slat section has been moved to provide a chair.

Extending rearwardly from the bed frame l6 are ears 31 to which thearms 38 are connected, the arms 38 being pivotally connected with the rails of the intermediate section 32 to 39, so that after pivotal movement of the frame 5, the slat frame is moved to a position to provide a chair, the chair seat or intermediate section of the slat frame being supported by said arms 38.

The side rails 4|] of the slat frame, are provided with ribs 4| extending longitudinally thereof, the ribs 4| operating in the slots 42 formed in the bed frame l5, so that the side rails 40 may slide longitudinally of the bed frame l6.

Secured along the lower sides of the side rails 40 of the slat frame, are rack bars 43 that engage the pinions 44 secured to the shaft 45 adja cent to the ends thereof, the ends of the shaft 45 resting in bearing openings in the plates 46 that are welded to the side rails of the bed frame l6. The shaft 45 is provided with pinions 47 that are engaged by pinions 48 that are secured to the upper ends of the shafts 49 that are operated in bearing plates 50, that are secured to the plate 46. These shafts 49 provide supports for the pinions that are secured thereto, the pinions 5| contacting with the worm gears 52 secured to the operating shaft 53 on which the operating wheels 54 are secured. Thus it will be seen that due to this construction, the slat frame of the bed may be adjusted longitudinally of the bed frame I6. I V

Slats 56 extend across the slat frame, and have their ends connected to the side rails of the slat frame by coiled springs 51.

From the foregoing it will be seen that due to the construction shown and described, I have provided a hospital bed including a stationary bed frame, a pivoted bed frame mounted there?- on adapted to swing from a horizontal to a vertical position and a slidable slat frame mounted on the pivoted bed frame on which the usual mattress is supported, the slat frame being so constructed and arranged that it' may be swung pro to a position so that it will form achair at one end of the hospital bed.

By moving the frame Hi to a vertical position, it is obvious that a person may stand on the foot rail 58, and the section |6 tilted inwardly on the stationary frame provides means for conveniently transferring an invalid from a wheel chair or the like, onto the bed. 7

Having thus described the invention, what is claimed is: 1

1. In a hospital bed, a stationary bed frame having a clearance at the foot thereof, a pivoted bed frame mounted within the stationary bed frame, one end of the pivoted bed frame being movable through the clearance at the foot of said stationary bed frame, means for tilting the pivoted bed frame to various angular positions within the stationary bed frame, a slat frame comprising pivotally connected sections mounted in said pivoted bed frame, operating means carried by thepivoted bed frame for moving said slat frame longitudinally within the pivoted bed frame, arms pivotally connecting the pivoted bed frame and slat frame; the arms effecting movement of the foot and intermediate sections of said slat frame providing a chair, as the slat frame is moved longitudinally.

2. In a hospital bed, a stationary bed frame including side fails, a bed frame pivotally mounted between said side rails and including sidemembers having slots disposed longitudinally in the inner edges thereof, a slat frame embodying pivotally connected sections, ribs formed on one of said sections movable longitudinally within the slots of the side members, manually operated gearing for tilting the pivoted bed frame within the stationary bed frame, means for moving the slat frame longitudinally of the pivoted bed frame, and pivoted arms connected between the pivoted bed frame and one section of the slat frame operable to move one section of the slat frame forwardly providing a chair seat after said pivoted bed frame is swung vertically and as said slat frame is moved longitu'dinally.

3. In a hospital bed, a stationary bed frame including side rails, a pivoted bed frame mounted between said side rails and connected therewith, a sectional slat frame including upper and lower and intermediate slat sections slidably mounted on the pivoted bed frame, arms pivotally connected between the pivoted bed frame and intermediate slat section, said arms being operable in moving the intermediate section of the slat frame to a horizontal position providing a chair seat, when the slat frame is moved longitudinally of the pivoted frame in one direction, and after the latter is swung to' vertical position.

I 4 In a hospital bed, a stationary bed frame, a pivoted bed frame mounted within the stationary bed frame, and connected to the latter at one end thereof a sectional flat frame mounted within said pivoted bed frame, means for swinging the pivoted bed frame to a horizontal or vertical position within the stationary bed frame, and means for sliding the slat frame longitudinally of the pivoted frame and projecting certain sections of the slatted frame away from said bed frame in providing a chair at one end of the stationary bed frame.

5; In a hospital bed, a stationary bed frame comprising side rails curved upwardly and downwardly at one end of the bed frame providing chair arms, a pivoted bed frame mounted between the side rails and being movable to a vertical position between said chair arms, a slat frame mounted within the pivoted bed frame, said slat frame embodying pivotally connected sections longitudinally movable in said bed frame and arms pivotally connected between said pivoted bed frame and one section of the slat frame, said arms operating to move the slat frame providing a chair seat between the chair arms when said pivoted bed frame has been swung upwardly and the slat frame has been moved longitudinally.

CARLOS M. LARRICK.

References Cited in the file of this patent UNITED STATES PATENTS 

